I have an input Text box and 1 button on my screen. I want to enable button only when input Text has some value in it. I have implemented following code and it is working OK when i enter some value and it enables the button. But ajax call is not made when i remove string from input Text and hence button is enabled even when i do not have any value.
code that i tried is
<h:inputText id="inputText" value="#{bean.value1}" label="Value1" required="true"
requiredMessage="value is empty" class="form-control">
<f:ajax event="keyup" render="clearButton"></f:ajax>
</h:inputText>
try this code without the required true
<h:inputText id="inputText" value="#{bean.value1}" label="Value1" class="form-control">
<f:ajax event="keyup" render="clearButton"></f:ajax>
</h:inputText>
If this solved your problem you can see more about in http://docs.oracle.com/javaee/1.4/tutorial/doc/JSFIntro10.html
It's a problem with the life circle of JSF, when you set the required like true and the input have no value your method never will be called.
Also you can try put the tag immediate for ignore the validation phase.
Related
I know this question exists somewhere else in SO but either the solutions are old (and JSF seems to have improved a lot) or I cannot make the solution work.
As simple as it sounds, I would like to replace the text of an input element based on the value of a combo box. I would like to use Ajax, and would like this to work even if there is only one element in the combo (it doesn't matter if by default the selection of the combo is empty).
<h:selectOneMenu id="fnamecombo" valueChangeListener="#{namesController.setForename(fnamecombo)}">
<c:forEach items="#{namesController.myForenames}" var="myforename">
<f:selectItem itemValue="#{myforename}" itemLabel="#{myforename}" />
</c:forEach>
<f:ajax render="fnameinput" />
</h:selectOneMenu>
<h:inputText value="#{namesController.forename}" id="fnameinput" />
This doesn't work. So first of all, I have no idea how to call the setForename method. If I use valueChangeListener="#{namesController.setForename('xxxxx')}" it works, but only the 1st time and iff there are more than one element in the combo, since otherwise the event does not seem to be fired.
What is the easy fix?
EDIT
Ok, so I have made progress. It was easier than I expected:
<h:selectOneMenu id="fnamecombo" value="#{namesController.forename}">
<c:forEach items="#{namesController.myForenames}" var="myforename">
<f:selectItem itemValue="#{myforename}" itemLabel="#{myforename}" />
</c:forEach>
<f:ajax render="fnameinput" />
</h:selectOneMenu>
<h:inputText value="#{namesController.forename}" id="fnameinput" />
This seems to work on a selectItem that I create by hand, but not on the one that is printing with the foreach loop. So this is the rendered code, where I obtained 'john' from the loop and I manually created 'example':
<select id="myForm:fnamecombo" name="myForm:fnamecombo" size="1" onchange="mojarra.ab(this,event,'valueChange',0,'myForm:fnameinput')">
<option value="example">example</option>
<option value="john">john</option>
</select>
It works with 'example' but not with 'john'.
Finally I got the answer.
<h:selectOneMenu id="fnamecombo" value="#{namesController.forename}">
<f:selectItems value="#{namesController.myForenames}" />
<f:ajax render="fnameinput" />
</h:selectOneMenu>
<h:inputText value="#{namesController.forename}" id="fnameinput" />
No need for forEach as mentioned by Alexandre Lavoie.
This answer by Luiggi Mendoza gave me the hint to find it out. The reason my input was not updated by the values in the f:selectItems and it was in the ones that I introduced manually is the scope of the managed bean. I realised that the input was actually being updated in any case, but when coming from the f:selectItems the input was updated with null. Why? Because the scope of namesController was #RequestScoped and not #ViewScoped. Changing this solves the problem.
I got a simple login form. I am using <p:ajax> to invoke a <p:blockUI> (see this question).
<h:commandButton id="anmeldung_button"
action="#{benutzerAnmeldung.anmelden}" value="Anmelden"
styleClass="btn btn-info btn-sm">
<p:ajax process="#form" update="#form"/>
</h:commandButton>
<p:blockUI id="block" block=":anmeldung" trigger="anmeldung_button" />
I am using <o:highlight /> to highlight invalid inputs. This works fine.
It is working with a <f:ajax> perfectly, too.
Apperently, it is not working with <p:ajax>.
How can I achieve this?
This is caused by <p:ajax> trying to refocus the active element after executing the oncomplete scripts via doEval() (as can be seen in handleReFocus() function in core.ajax.js script. However, when you submit the form by clicking the command button instead of pressing Enter while inside the input, then that active element becomes the command button itself, not the input text. You can confirm this by just using Enter key to submit the form. You'll see that the focus is done right.
There are in your particular case 2 ways to workaround this:
Make use of PrimeFaces' own autofocus facility via <p:focus> which is placed inside the form as below:
<h:form id="anmeldung">
<p:focus context="anmeldung" />
...
</h:form>
It also automatically takes into account invalidated input fields.
Set PrimeFaces.customFocus to true in JavaScript, so that handleReFocus() function won't do its job.
<script>PrimeFaces.customFocus = true;</script>
I am facing an issue after validations in JSF
Scenario - I have 2 drop downs and 2 input fields on the form. On selection of first drop down second one will populate and also the values of 2 text fields are depends on the first drop down selection.
1) So when I select some value from first drop down, second drop down and the text fields are populating with proper values.
2) when I click on submit button with out selecting the value from second drop down it is showing validation message as expected.
3) Now I changed the value of first drop down after validation error/fails. The values in text fields is not changing as required (means the text filed values are still showing old values) but the second drop down values are changing as expected.
Note:- Issue is only after validation fails.
<span class="col1 smallRightPadding marginBtmAdDiag">
<rich:select defaultLabel="Select bldng" enableManualInput="true"
id="search_bldng"
value="#{testManagedBean.bldng.bldngID}"
required="true" requiredMessage="#{testHome.selectBldng}">
<f:selectItemsvalue="#{testManagedBean.lstBldng}" var="bldngVar"
itemValue="#{bldngVar.bldngID}" itemLabel="#{bldngVar.bldngCode}">
</f:selectItems>
<a4j:ajax execute="#this" event="selectitem"
listener="#{testManagedBean.populateFloor}"
render="search_floor,hidSelBldng,hidSelFloor,hidSelbldngID" />
</rich:select>
<h:inputHidden id="hidSelBldng" value="#{testManagedBean.bldng.bldngCode}" />
<h:inputHidden id="hidSelbldngID" value="#{testManagedBean.bldng.bldngID}" />
</span>
<rich:select defaultLabel="Select Floor" enableManualInput="true"
id="search_floor"
value="#{testManagedBean.floor.floorID}"
required="true"
requiredMessage="#{testHome.selectFloor}">
<f:selectItems value="#{testManagedBean.floorLst}"
var="flr" itemValue="#{flr.floorID}"
itemLabel="#{flr.floorName}">
</f:selectItems>
</rich:select>
<h:commandButton id="goButtonId" value="#{testHome.goButton}" styleClass="saveButton">
<a4j:ajax event="click" execute="#form" oncomplete="drawLayerFromBtn();"
listener="#{testManagedBean.viewReport}"
render="tableId,hidSelFloor"/>
</h:commandButton>
The Problem
It's the classic jsf-2 problem with resetting the local values on input fields after a validation error. After a validation failure, JSF doesn't reset the value of the fields that were caught in the previous validation error, hence the reason the you're still seeing the old values
To Solve
You basically need to reset the values on those (missing) textfields yourself. In a convenient place, maybe in populateFloor
if(ctxt.isValidationFailed()){
UIInput textField1 = (UIInput) FacesContext.getCurrentInstance().getViewRoot().findComponent("theTextFieldId")
textField1.resetValue();
}
The snippet above will execute only if the current request cycle is marked as failed, and then proceed to clear the local values of the textfield with id="textField1"
<a4j:outputPanel id="tapalSectionSendToPanel" ajaxsingle="true">
<h:inputText id="sendToId1" value="#{MainBean.SectionBean.sendTo}"
class="createresizedTextbox"
required="true" requiredMessage="#{msg.labl_required}"
disabled="true" />
<h:message for="sendToId1" style="color:red" />
</a4j:outputPanel>
i need to validate textbox for empty validation and should show required when i click button without entering any value in textbox. It works fine without disabled="true". Whats the alternative for my requirement.
First, required and disabled don't go well together, because they are mutually exclusive as per the JSF Spec:
required: Flag indicating that the user is required to provide a submitted value for this input component.
disabled: Flag indicating that this element must never receive focus or be included in a subsequent submit.
Like I said in the comments, you can just display a message when the user tries to submit the form without selecting a node:
<h:inputText id="sendToId1" value="#{MainBean.SectionBean.sendTo}"
styleClass="createresizedTextbox" required="true" readonly="true" />
<h:message for="sendToId1" value="#{msg.labl_required}"
rendered="#{facesContext.postback and facesContext.validationFailed}" />
As an alternative you can just display a text anywhere in your markup:
<h:outputText value="#{msg.labl_required}"
rendered="#{empty MainBean.SectionBean.sendTo}" />
disabled="true" disables the input (so it's skipped when the form is submitted), if you don't want the user to type in it use readonly="readonly"
in my page , i'm trying to display a confirmation dialog after clicking a button .In the confirmation dialog i used the attribute message to display it , this message is taken value after clicking the button . So i did it like that :
<p:commandButton value="Delete" update="testPlanetree" id="deleteBtn"
disabled="#{projectTestManagementMB.disable}" oncomplete="deleteConfirmation.show()"
action="#{projectTestManagementMB.testFn}"/>
<p:confirmDialog id="confirmDialog" message="#
{projectTestManagementMB.deleteConfirmationMsg}"
header="Confirming Deleting Process" severity="alert"
widgetVar="deleteConfirmation">
<p:commandButton id="confirm" value="Yes Sure" update="messages"
oncomplete="deleteConfirmation.hide()" />
<p:commandButton id="decline" value="Not Yet"
onclick="deleteConfirmation.hide()" type="button" />
</p:confirmDialog>
ProjectTestManagementMB Managed Bean :
private String deleteConfirmationMsg;//with getters and setters
public void testFn(){
deleteConfirmationMsg="do you want to delete ...";
}
The problem is that the deleteConfirmationMsg never take the value "do you want to delete ..." (is always empty)
Any idea will be appreciated
The <p:confirmDialog> has already generated its HTML representation on the very first HTTP request returning the page with the form and the dialog. It's merely hidden by CSS and is supposed to be shown/hidden by JS. When you change the confirm message afterwards in a bean action method, then it won't be reflected in the generated HTML output as long as you don't ajax-update it.
So, in order to get the changed message being reflected, you'd need to update the HTML representation of the <p:confirmDialog> in the client side before showing it in the oncomplete. You can for this use the update attribute of the command button which should show the dialog.
<p:commandButton ... update="confirmDialog testPlanetree">
try this i should works :
<p:commandButton value="Delete" update="testPlanetree" id="deleteBtn" actionListener="#
{projectTestManagementMB.testFn}"
disabled="# {projectTestManagementMB.disable}"
oncomplete="deleteConfirmation.show()" />